A number of people are suffering from metal allergy and PPP (pustulosis palmaris et plantaris). In some cases, they may be caused by some types of fillings. For example, amalgam contains mercury. Some experts argue that it is quite toxic for a human body. From this point of view, we hardly use metal for treatment. To molars receiving high bite pressure, we apply semiprecious metal without palladium or mercury and cover it with ceramics.
